| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 72j - Southern Illinoian Till Plain |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 62275 - Pocahontas, IL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 24 | 33 | 43 | 54 | 63 | 67 | 64 | 56 | 45 | 35 | 24 | 44 |
| Avg Max Temp (°F) | 37 | 43 | 54 | 65 | 75 | 84 | 88 | 86 | 80 | 69 | 54 | 41 | 65 |
| Avg Precip (In.) | 2.13 | 2.25 | 3.53 | 3.86 | 4.35 | 4.08 | 3.72 | 3.09 | 3.16 | 2.93 | 3.91 | 3.04 | 40.04 |